Answer:
none of the above
Step-by-step explanation:
It appears your definition is of an arithmetic sequence with first term 2 and common difference -3. Each term is 3 less than the one before it. The first 4 terms of that sequence are ...
2, -1, -4, -7 . . . . . matches no offered choice
_____
The first choice is described by the formula ...
an = n -3
It appears that the problem's author mixed up recursive and explicit formulas.
